/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * http://www.gnu.org/copyleft/gpl.html
 */
package l1j.server;

import l1j.server.server.utils.StreamUtil;

public class Base64 {

	/* ******** P U B L I C F I E L D S ******** */

	/**
	 * A {@link Base64#InputStream} will read data from another
	 * {@link java.io.InputStream}, given in the constructor, and encode/decode
	 * to/from Base64 notation on the fly.
	 *
	 * @see Base64
	 * @see java.io.FilterInputStream
	 * @since 1.3
	 */
	public static class InputStream extends java.io.FilterInputStream {
	//	private int options; // Options specified

		private final boolean encode; // Encoding or decoding

		private int position; // Current position in the buffer

		private final byte[] buffer; // Small buffer holding converted data

		private final int bufferLength; // Length of buffer (3 or 4)

		private int numSigBytes; // Number of meaningful bytes in the buffer

		private int lineLength;

		private final boolean breakLines; // Break lines at less than 80 characters

		/**
		 * Constructs a {@link Base64#InputStream} in DECODE mode.
		 *
		 * @param in
		 *            the {@link java.io.InputStream} from which to read data.
		 * @since 1.3
		 */
		public InputStream(final java.io.InputStream in) {
			this(in, DECODE);
		} // end constructor

		/**
		 * Constructs a {@link Base64#InputStream} in either ENCODE or DECODE
		 * mode.
		 * <p>
		 * Valid options:
		 *
		 * <pre>
		 *      ENCODE or DECODE: Encode or Decode as data is read.
		 *      DONT_BREAK_LINES: don't break lines at 76 characters
		 *        (only meaningful when encoding)
		 *        &lt;i&gt;Note: Technically, this makes your encoding non-compliant.&lt;/i&gt;
		 * </pre>
		 *
		 * <p>
		 * Example: <code>new Base64.InputStream( in, Base64.DECODE )</code>
		 *
		 *
		 * @param in
		 *            the {@link java.io.InputStream} from which to read data.
		 * @param options
		 *            Specified options
		 * @see Base64#ENCODE
		 * @see Base64#DECODE
		 * @see Base64#DONT_BREAK_LINES
		 * @since 2.0
		 */
		public InputStream(final java.io.InputStream in, final int options) {
			super(in);
		//	this.options = options;
			this.breakLines = (options & DONT_BREAK_LINES) != DONT_BREAK_LINES;
			this.encode = (options & ENCODE) == ENCODE;
			this.bufferLength = this.encode ? 4 : 3;
			this.buffer = new byte[this.bufferLength];
			this.position = -1;
			this.lineLength = 0;
		} // end constructor

		/**
		 * Reads enough of the input stream to convert to/from Base64 and
		 * returns the next byte.
		 *
		 * @return next byte
		 * @since 1.3
		 */
		@Override
		public int read() throws java.io.IOException {
			// Do we need to get data?
			if (this.position < 0) {
				if (this.encode) {
					final byte[] b3 = new byte[3];
					int numBinaryBytes = 0;
					for (int i = 0; i < 3; i++) {
						try {
							final int b = this.in.read();

							// If end of stream, b is -1.
							if (b >= 0) {
								b3[i] = (byte) b;
								numBinaryBytes++;
							} // end if: not end of stream

						} // end try: read
						catch (final java.io.IOException e) {
							// Only a problem if we got no data at all.
							if (i == 0) {
								throw e;
							}

						} // end catch
					} // end for: each needed input byte

					if (numBinaryBytes > 0) {
						encode3to4(b3, 0, numBinaryBytes, this.buffer, 0);
						this.position = 0;
						this.numSigBytes = 4;
					} // end if: got data
					else {
						return -1;
					} // end else
				} // end if: encoding

				// Else decoding
				else {
					final byte[] b4 = new byte[4];
					int i = 0;
					for (i = 0; i < 4; i++) {
						// Read four "meaningful" bytes:
						int b = 0;
						do {
							b = this.in.read();
						} while (b >= 0
								&& DECODABET[b & 0x7f] <= WHITE_SPACE_ENC);

						if (b < 0) {
							break; // Reads a -1 if end of stream
						}

						b4[i] = (byte) b;
					} // end for: each needed input byte

					if (i == 4) {
						this.numSigBytes = decode4to3(b4, 0, this.buffer, 0);
						this.position = 0;
					} // end if: got four characters
					else if (i == 0) {
						return -1;
					} // end else if: also padded correctly
					else {
						// Must have broken out from above.
						throw new java.io.IOException(
								"Improperly padded Base64 input.");
					} // end

				} // end else: decode
			} // end else: get data

			// Got data?
			if (this.position >= 0) {
				// End of relevant data?
				if ( /* !encode && */this.position >= this.numSigBytes) {
					return -1;
				}

				if (this.encode && this.breakLines && this.lineLength >= MAX_LINE_LENGTH) {
					this.lineLength = 0;
					return '\n';
				} // end if
				else {
					this.lineLength++; // This isn't important when decoding
					// but throwing an extra "if" seems
					// just as wasteful.

					final int b = this.buffer[this.position++];

					if (this.position >= this.bufferLength) {
						this.position = -1;
					}

					return b & 0xFF; // This is how you "cast" a byte that's
					// intended to be unsigned.
				} // end else
			} // end if: position >= 0

			// Else error
			else {
				// When JDK1.4 is more accepted, use an assertion here.
				throw new java.io.IOException(
						"Error in Base64 code reading stream.");
			} // end else
		} // end read

		/**
		 * Calls {@link #read} repeatedly until the end of stream is reached or
		 * <var>len</var> bytes are read. Returns number of bytes read into
		 * array or -1 if end of stream is encountered.
		 *
		 * @param dest
		 *            array to hold values
		 * @param off
		 *            offset for array
		 * @param len
		 *            max number of bytes to read into array
		 * @return bytes read into array or -1 if end of stream is encountered.
		 * @since 1.3
		 */
		@Override
		public int read(final byte[] dest, final int off, final int len)
				throws java.io.IOException {
			int i;
			int b;
			for (i = 0; i < len; i++) {
				b = this.read();

				// if( b < 0 && i == 0 )
				// return -1;

				if (b >= 0) {
					dest[off + i] = (byte) b;
				} else if (i == 0) {
					return -1;
				} else {
					break; // Out of 'for' loop
				}
			} // end for: each byte read
			return i;
		} // end read

	} // end inner class InputStream

	/**
	 * A {@link Base64#OutputStream} will write data to another
	 * {@link java.io.OutputStream}, given in the constructor, and encode/decode
	 * to/from Base64 notation on the fly.
	 *
	 * @see Base64
	 * @see java.io.FilterOutputStream
	 * @since 1.3
	 */
	public static class OutputStream extends java.io.FilterOutputStream {
	//	private int options;

		private final boolean encode;

		private int position;

		private byte[] buffer;

		private final int bufferLength;

		private int lineLength;

		private final boolean breakLines;

		private final byte[] b4; // Scratch used in a few places

		private boolean suspendEncoding;

		/**
		 * Constructs a {@link Base64#OutputStream} in ENCODE mode.
		 *
		 * @param out
		 *            the {@link java.io.OutputStream} to which data will be
		 *            written.
		 * @since 1.3
		 */
		public OutputStream(final java.io.OutputStream out) {
			this(out, ENCODE);
		} // end constructor

		/**
		 * Constructs a {@link Base64#OutputStream} in either ENCODE or DECODE
		 * mode.
		 * <p>
		 * Valid options:
		 *
		 * <pre>
		 *      ENCODE or DECODE: Encode or Decode as data is read.
		 *      DONT_BREAK_LINES: don't break lines at 76 characters
		 *        (only meaningful when encoding)
		 *        &lt;i&gt;Note: Technically, this makes your encoding non-compliant.&lt;/i&gt;
		 * </pre>
		 *
		 * <p>
		 * Example: <code>new Base64.OutputStream( out, Base64.ENCODE )</code>
		 *
		 * @param out
		 *            the {@link java.io.OutputStream} to which data will be
		 *            written.
		 * @param options
		 *            Specified options.
		 * @see Base64#ENCODE
		 * @see Base64#DECODE
		 * @see Base64#DONT_BREAK_LINES
		 * @since 1.3
		 */
		public OutputStream(final java.io.OutputStream out, final int options) {
			super(out);
		//	this.options = options;
			this.breakLines = (options & DONT_BREAK_LINES) != DONT_BREAK_LINES;
			this.encode = (options & ENCODE) == ENCODE;
			this.bufferLength = this.encode ? 3 : 4;
			this.buffer = new byte[this.bufferLength];
			this.position = 0;
			this.lineLength = 0;
			this.suspendEncoding = false;
			this.b4 = new byte[4];
		} // end constructor

		/**
		 * Flushes and closes (I think, in the superclass) the stream.
		 *
		 * @since 1.3
		 */
		@Override
		public void close() throws java.io.IOException {
			// 1. Ensure that pending characters are written
			this.flushBase64();

			// 2. Actually close the stream
			// Base class both flushes and closes.
			super.close();

			this.buffer = null;
			this.out = null;
		} // end close

		/**
		 * Method added by PHIL. [Thanks, PHIL. -Rob] This pads the buffer
		 * without closing the stream.
		 */
		public void flushBase64() throws java.io.IOException {
			if (this.position > 0) {
				if (this.encode) {
					this.out.write(encode3to4(this.b4, this.buffer, this.position));
					this.position = 0;
				} // end if: encoding
				else {
					throw new java.io.IOException(
							"Base64 input not properly padded.");
				} // end else: decoding
			} // end if: buffer partially full

		} // end flush

		/**
		 * Resumes encoding of the stream. May be helpful if you need to embed a
		 * piece of base640-encoded data in a stream.
		 *
		 * @since 1.5.1
		 */
		public void resumeEncoding() {
			this.suspendEncoding = false;
		} // end resumeEncoding

		/**
		 * Suspends encoding of the stream. May be helpful if you need to embed
		 * a piece of base640-encoded data in a stream.
		 *
		 * @since 1.5.1
		 */
		public void suspendEncoding() throws java.io.IOException {
			this.flushBase64();
			this.suspendEncoding = true;
		} // end suspendEncoding

		/**
		 * Calls {@link #write} repeatedly until <var>len</var> bytes are
		 * written.
		 *
		 * @param theBytes
		 *            array from which to read bytes
		 * @param off
		 *            offset for array
		 * @param len
		 *            max number of bytes to read into array
		 * @since 1.3
		 */
		@Override
		public void write(final byte[] theBytes, final int off, final int len)
				throws java.io.IOException {
			// Encoding suspended?
			if (this.suspendEncoding) {
				super.out.write(theBytes, off, len);
				return;
			} // end if: supsended

			for (int i = 0; i < len; i++) {
				this.write(theBytes[off + i]);
			} // end for: each byte written

		} // end write

		/**
		 * Writes the byte to the output stream after converting to/from Base64
		 * notation. When encoding, bytes are buffered three at a time before
		 * the output stream actually gets a write() call. When decoding, bytes
		 * are buffered four at a time.
		 *
		 * @param theByte
		 *            the byte to write
		 * @since 1.3
		 */
		@Override
		public void write(final int theByte) throws java.io.IOException {
			// Encoding suspended?
			if (this.suspendEncoding) {
				super.out.write(theByte);
				return;
			} // end if: supsended

			// Encode?
			if (this.encode) {
				this.buffer[this.position++] = (byte) theByte;
				if (this.position >= this.bufferLength) // Enough to encode.
				{
					this.out.write(encode3to4(this.b4, this.buffer, this.bufferLength));

					this.lineLength += 4;
					if (this.breakLines && this.lineLength >= MAX_LINE_LENGTH) {
						this.out.write(NEW_LINE);
						this.lineLength = 0;
					} // end if: end of line

					this.position = 0;
				} // end if: enough to output
			} // end if: encoding

			// Else, Decoding
			else {
				// Meaningful Base64 character?
				if (DECODABET[theByte & 0x7f] > WHITE_SPACE_ENC) {
					this.buffer[this.position++] = (byte) theByte;
					if (this.position >= this.bufferLength) // Enough to output.
					{
						final int len = Base64.decode4to3(this.buffer, 0, this.b4, 0);
						this.out.write(this.b4, 0, len);
						// out.write( Base64.decode4to3( buffer ) );
						this.position = 0;
					} // end if: enough to output
				} // end if: meaningful base64 character
				else if (DECODABET[theByte & 0x7f] != WHITE_SPACE_ENC) {
					throw new java.io.IOException(
							"Invalid character in Base64 data.");
				} // end else: not white space either
			} // end else: decoding
		} // end write

	} // end inner class OutputStream

	public final static int NO_OPTIONS = 0;

	public final static int ENCODE = 1;

	public final static int DECODE = 0;

	/* ******** P R I V A T E F I E L D S ******** */

	public final static int GZIP = 2;

	public final static int DONT_BREAK_LINES = 8;

	private final static int MAX_LINE_LENGTH = 76;

	private final static byte EQUALS_SIGN = (byte) '=';

	private final static byte NEW_LINE = (byte) '\n';

	private final static String PREFERRED_ENCODING = "UTF-8";

	private final static byte[] ALPHABET;

	private final static byte[] _NATIVE_ALPHABET = /*
													 * May be something funny
													 * like EBCDIC
													 */
	{ (byte) 'A', (byte) 'B', (byte) 'C', (byte) 'D', (byte) 'E', (byte) 'F',
			(byte) 'G', (byte) 'H', (byte) 'I', (byte) 'J', (byte) 'K',
			(byte) 'L', (byte) 'M', (byte) 'N', (byte) 'O', (byte) 'P',
			(byte) 'Q', (byte) 'R', (byte) 'S', (byte) 'T', (byte) 'U',
			(byte) 'V', (byte) 'W', (byte) 'X', (byte) 'Y', (byte) 'Z',
			(byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e',
			(byte) 'f', (byte) 'g', (byte) 'h', (byte) 'i', (byte) 'j',
			(byte) 'k', (byte) 'l', (byte) 'm', (byte) 'n', (byte) 'o',
			(byte) 'p', (byte) 'q', (byte) 'r', (byte) 's', (byte) 't',
			(byte) 'u', (byte) 'v', (byte) 'w', (byte) 'x', (byte) 'y',
			(byte) 'z', (byte) '0', (byte) '1', (byte) '2', (byte) '3',
			(byte) '4', (byte) '5', (byte) '6', (byte) '7', (byte) '8',
			(byte) '9', (byte) '+', (byte) '/' };

	//private final static byte BAD_ENCODING = -9; // Indicates error in

	// encoding

	static {
		byte[] __bytes;
		try {
			__bytes = new String(
					"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/")
					.getBytes(PREFERRED_ENCODING);
		} // end try
		catch (final java.io.UnsupportedEncodingException use) {
			__bytes = _NATIVE_ALPHABET; // Fall back to native encoding
		} // end catch
		ALPHABET = __bytes;
	} // end static

	// encoding

	private final static byte[] DECODABET = { -9, -9, -9, -9, -9, -9, -9, -9,
			-9, // Decimal 0 - 8
			-5, -5, // Whitespace: Tab and Linefeed
			-9, -9, // Decimal 11 - 12
			-5, // Whitespace: Carriage Return
			-9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal 14 -
			// 26
			-9, -9, -9, -9, -9, // Decimal 27 - 31
			-5, // Whitespace: Space
			-9, -9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal 33 - 42
			62, // Plus sign at decimal 43
			-9, -9, -9, // Decimal 44 - 46
			63, // Slash at decimal 47
			52, 53, 54, 55, 56, 57, 58, 59, 60, 61, // Numbers zero through nine
			-9, -9, -9, // Decimal 58 - 60
			-1, // Equals sign at decimal 61
			-9, -9, -9, // Decimal 62 - 64
			0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, // Letters 'A'
			// through 'N'
			14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, // Letters 'O'
			// through 'Z'
			-9, -9, -9, -9, -9, -9, // Decimal 91 - 96
			26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, // Letters 'a'
			// through 'm'
			39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, // Letters 'n'
			// through 'z'
			-9, -9, -9, -9 // Decimal 123 - 126
	/*
	 * ,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 127 - 139
	 * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 140 - 152
	 * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 153 - 165
	 * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 166 - 178
	 * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 179 - 191
	 * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 192 - 204
	 * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 205 - 217
	 * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 218 - 230
	 * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 231 - 243
	 * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9 // Decimal 244 - 255
	 */
	};

	// encoding

	private final static byte WHITE_SPACE_ENC = -5; // Indicates white space in

	/* ******** E N C O D I N G M E T H O D S ******** */

private final static byte EQUALS_SIGN_ENC = -1; // Indicates equals sign in

	/**
	 * Very low-level access to decoding ASCII characters in the form of a byte
	 * array. Does not support automatically gunzipping or any other "fancy"
	 * features.
	 *
	 * @param source
	 *            The Base64 encoded data
	 * @param off
	 *            The offset of where to begin decoding
	 * @param len
	 *            The length of characters to decode
	 * @return decoded data
	 * @since 1.3
	 */
	public static byte[] decode(final byte[] source, final int off, final int len) {
		final int len34 = len * 3 / 4;
		final byte[] outBuff = new byte[len34]; // Upper limit on size of output
		int outBuffPosn = 0;

		final byte[] b4 = new byte[4];
		int b4Posn = 0;
		int i = 0;
		byte sbiCrop = 0;
		byte sbiDecode = 0;
		for (i = off; i < off + len; i++) {
			sbiCrop = (byte) (source[i] & 0x7f); // Only the low seven bits
			sbiDecode = DECODABET[sbiCrop];

			if (sbiDecode >= WHITE_SPACE_ENC) // White space, Equals sign or
			// better
			{
				if (sbiDecode >= EQUALS_SIGN_ENC) {
					b4[b4Posn++] = sbiCrop;
					if (b4Posn > 3) {
						outBuffPosn += decode4to3(b4, 0, outBuff, outBuffPosn);
						b4Posn = 0;

						// If that was the equals sign, break out of 'for' loop
						if (sbiCrop == EQUALS_SIGN) {
							break;
						}
					} // end if: quartet built

				} // end if: equals sign or better

			} // end if: white space, equals sign or better
			else {
				System.err.println("Bad Base64 input character at " + i + ": "
						+ source[i] + "(decimal)");
				return null;
			} // end else:
		} // each input character

		final byte[] out = new byte[outBuffPosn];
		System.arraycopy(outBuff, 0, out, 0, outBuffPosn);
		return out;
	} // end decode

	/**
	 * Decodes data from Base64 notation, automatically detecting
	 * gzip-compressed data and decompressing it.
	 *
	 * @param s
	 *            the string to decode
	 * @return the decoded data
	 * @since 1.4
	 */
	public static byte[] decode(final String s) {
		byte[] bytes;
		try {
			bytes = s.getBytes(PREFERRED_ENCODING);
		} // end try
		catch (final java.io.UnsupportedEncodingException uee) {
			bytes = s.getBytes();
		} // end catch
			// </change>

		// Decode
		bytes = decode(bytes, 0, bytes.length);

		// Check to see if it's gzip-compressed
		// GZIP Magic Two-Byte Number: 0x8b1f (35615)
		if (bytes.length >= 2) {

			final int head = bytes[0] & 0xff | bytes[1] << 8 & 0xff00;
			if (bytes != null && // In case decoding returned null
					bytes.length >= 4 && // Don't want to get
					// ArrayIndexOutOfBounds exception
					java.util.zip.GZIPInputStream.GZIP_MAGIC == head) {
				java.io.ByteArrayInputStream bais = null;
				java.util.zip.GZIPInputStream gzis = null;
				java.io.ByteArrayOutputStream baos = null;
				final byte[] buffer = new byte[2048];
				int length = 0;

				try {
					baos = new java.io.ByteArrayOutputStream();
					bais = new java.io.ByteArrayInputStream(bytes);
					gzis = new java.util.zip.GZIPInputStream(bais);

					while ((length = gzis.read(buffer)) >= 0) {
						baos.write(buffer, 0, length);
					} // end while: reading input

					// No error? Get new bytes.
					bytes = baos.toByteArray();

				} // end try
				catch (final java.io.IOException e) {
					// Just return originally-decoded bytes
				} // end catch
				finally {
					StreamUtil.close(baos, gzis, bais);
				} // end finally

			} // end if: gzipped
		} // end if: bytes.length >= 2

		return bytes;
	} // end decode

	/**
	 * Decodes the first four bytes of array <var>fourBytes</var> and returns an
	 * array up to three bytes long with the decoded values.
	 *
	 * @param fourBytes
	 *            the array with Base64 content
	 * @return array with decoded values
	 * @since 1.3
	 */
	/*private static byte[] decode4to3(byte[] fourBytes) {
		byte[] outBuff1 = new byte[3];
		int count = decode4to3(fourBytes, 0, outBuff1, 0);
		byte[] outBuff2 = new byte[count];

		for (int i = 0; i < count; i++) {
			outBuff2[i] = outBuff1[i];
		}

		return outBuff2;
	}
*/
	/**
	 * Decodes four bytes from array <var>source</var> and writes the resulting
	 * bytes (up to three of them) to <var>destination</var>. The source and
	 * destination arrays can be manipulated anywhere along their length by
	 * specifying <var>srcOffset</var> and <var>destOffset</var>. This method
	 * does not check to make sure your arrays are large enough to accomodate
	 * <var>srcOffset</var> + 4 for the <var>source</var> array or
	 * <var>destOffset</var> + 3 for the <var>destination</var> array. This
	 * method returns the actual number of bytes that were converted from the
	 * Base64 encoding.
	 *
	 *
	 * @param source
	 *            the array to convert
	 * @param srcOffset
	 *            the index where conversion begins
	 * @param destination
	 *            the array to hold the conversion
	 * @param destOffset
	 *            the index where output will be put
	 * @return the number of decoded bytes converted
	 * @since 1.3
	 */
	private static int decode4to3(final byte[] source, final int srcOffset,
			final byte[] destination, final int destOffset) {
		// Example: Dk==
		if (source[srcOffset + 2] == EQUALS_SIGN) {
			// Two ways to do the same thing. Don't know which way I like best.
			// int outBuff = ( ( DECODABET[ source[ srcOffset ] ] << 24 ) >>> 6
			// )
			// | ( ( DECODABET[ source[ srcOffset + 1] ] << 24 ) >>> 12 );
			final int outBuff = (DECODABET[source[srcOffset]] & 0xFF) << 18
					| (DECODABET[source[srcOffset + 1]] & 0xFF) << 12;

			destination[destOffset] = (byte) (outBuff >>> 16);
			return 1;
		}

		// Example: DkL=
		else if (source[srcOffset + 3] == EQUALS_SIGN) {
			// Two ways to do the same thing. Don't know which way I like best.
			// int outBuff = ( ( DECODABET[ source[ srcOffset ] ] << 24 ) >>> 6
			// )
			// | ( ( DECODABET[ source[ srcOffset + 1 ] ] << 24 ) >>> 12 )
			// | ( ( DECODABET[ source[ srcOffset + 2 ] ] << 24 ) >>> 18 );
			final int outBuff = (DECODABET[source[srcOffset]] & 0xFF) << 18
					| (DECODABET[source[srcOffset + 1]] & 0xFF) << 12
					| (DECODABET[source[srcOffset + 2]] & 0xFF) << 6;

			destination[destOffset] = (byte) (outBuff >>> 16);
			destination[destOffset + 1] = (byte) (outBuff >>> 8);
			return 2;
		}

		// Example: DkLE
		else {
			try {
				// Two ways to do the same thing. Don't know which way I like
				// best.
				// int outBuff = ( ( DECODABET[ source[ srcOffset ] ] << 24 )
				// >>> 6 )
				// | ( ( DECODABET[ source[ srcOffset + 1 ] ] << 24 ) >>> 12 )
				// | ( ( DECODABET[ source[ srcOffset + 2 ] ] << 24 ) >>> 18 )
				// | ( ( DECODABET[ source[ srcOffset + 3 ] ] << 24 ) >>> 24 );
				final int outBuff = (DECODABET[source[srcOffset]] & 0xFF) << 18
						| (DECODABET[source[srcOffset + 1]] & 0xFF) << 12
						| (DECODABET[source[srcOffset + 2]] & 0xFF) << 6
						| DECODABET[source[srcOffset + 3]] & 0xFF;

				destination[destOffset] = (byte) (outBuff >> 16);
				destination[destOffset + 1] = (byte) (outBuff >> 8);
				destination[destOffset + 2] = (byte) outBuff;

				return 3;
			} catch (final Exception e) {
				System.out.println("" + source[srcOffset] + ": "
						+ DECODABET[source[srcOffset]]);
				System.out.println("" + source[srcOffset + 1] + ": "
						+ DECODABET[source[srcOffset + 1]]);
				System.out.println("" + source[srcOffset + 2] + ": "
						+ DECODABET[source[srcOffset + 2]]);
				System.out.println("" + source[srcOffset + 3] + ": "
						+ DECODABET[source[srcOffset + 3]]);
				return -1;
			} // e nd catch
		}
	} // end decodeToBytes

	/**
	 * Attempts to decode Base64 data and deserialize a Java Object within.
	 * Returns <tt>null</tt> if there was an error.
	 *
	 * @param encodedObject
	 *            The Base64 data to decode
	 * @return The decoded and deserialized object
	 * @since 1.5
	 */
	public static Object decodeToObject(final String encodedObject) {
		// Decode and gunzip if necessary
		final byte[] objBytes = decode(encodedObject);

		java.io.ByteArrayInputStream bais = null;
		java.io.ObjectInputStream ois = null;
		Object obj = null;

		try {
			bais = new java.io.ByteArrayInputStream(objBytes);
			ois = new java.io.ObjectInputStream(bais);

			obj = ois.readObject();
		} // end try
		catch (final java.io.IOException e) {
			e.printStackTrace();
		} // end catch
		catch (final java.lang.ClassNotFoundException e) {
			e.printStackTrace();
		} // end catch
		finally {
			StreamUtil.close(bais, ois);
		} // end finally

		return obj;
	} // end decodeObject

	/*	private static byte[] encode3to4(byte[] threeBytes) {
		return encode3to4(threeBytes, 3);
	} // end encodeToBytes
*/
/*	private static byte[] encode3to4(byte[] threeBytes, int numSigBytes) {
		byte[] dest = new byte[4];
		encode3to4(threeBytes, 0, numSigBytes, dest, 0);
		return dest;
	}
*/
	private static byte[] encode3to4(final byte[] b4, final byte[] threeBytes,
			final int numSigBytes) {
		encode3to4(threeBytes, 0, numSigBytes, b4, 0);
		return b4;
	} // end encode3to4

	private static byte[] encode3to4(final byte[] source, final int srcOffset,
			final int numSigBytes, final byte[] destination, final int destOffset) {
		// 1 2 3
		// 01234567890123456789012345678901 Bit position
		// --------000000001111111122222222 Array position from threeBytes
		// --------| || || || | Six bit groups to index ALPHABET
		// >>18 >>12 >> 6 >> 0 Right shift necessary
		// 0x3f 0x3f 0x3f Additional AND

		// Create buffer with zero-padding if there are only one or two
		// significant bytes passed in the array.
		// We have to shift left 24 in order to flush out the 1's that appear
		// when Java treats a value as negative that is cast from a byte to an
		// int.
		final int inBuff = (numSigBytes > 0 ? source[srcOffset] << 24 >>> 8 : 0)
				| (numSigBytes > 1 ? source[srcOffset + 1] << 24 >>> 16 : 0)
				| (numSigBytes > 2 ? source[srcOffset + 2] << 24 >>> 24 : 0);

		switch (numSigBytes) {
		case 3:
			destination[destOffset] = ALPHABET[inBuff >>> 18];
			destination[destOffset + 1] = ALPHABET[inBuff >>> 12 & 0x3f];
			destination[destOffset + 2] = ALPHABET[inBuff >>> 6 & 0x3f];
			destination[destOffset + 3] = ALPHABET[inBuff & 0x3f];
			return destination;

		case 2:
			destination[destOffset] = ALPHABET[inBuff >>> 18];
			destination[destOffset + 1] = ALPHABET[inBuff >>> 12 & 0x3f];
			destination[destOffset + 2] = ALPHABET[inBuff >>> 6 & 0x3f];
			destination[destOffset + 3] = EQUALS_SIGN;
			return destination;

		case 1:
			destination[destOffset] = ALPHABET[inBuff >>> 18];
			destination[destOffset + 1] = ALPHABET[inBuff >>> 12 & 0x3f];
			destination[destOffset + 2] = EQUALS_SIGN;
			destination[destOffset + 3] = EQUALS_SIGN;
			return destination;

		default:
			return destination;
		} // end switch
	} // end encode3to4

	public static String encodeBytes(final byte[] source) {
		return encodeBytes(source, 0, source.length, NO_OPTIONS);
	} // end encodeBytes

	/* ******** D E C O D I N G M E T H O D S ******** */

	public static String encodeBytes(final byte[] source, final int options) {
		return encodeBytes(source, 0, source.length, options);
	} // end encodeBytes

	public static String encodeBytes(final byte[] source, final int off, final int len) {
		return encodeBytes(source, off, len, NO_OPTIONS);
	} // end encodeBytes

	public static String encodeBytes(final byte[] source, final int off, final int len,
			final int options) {
		// Isolate options
		final int dontBreakLines = options & DONT_BREAK_LINES;
		final int gzip = options & GZIP;

		// Compress?
		if (gzip == GZIP) {
			java.io.ByteArrayOutputStream baos = null;
			java.util.zip.GZIPOutputStream gzos = null;
			Base64.OutputStream b64os = null;

			try {
				// GZip -> Base64 -> ByteArray
				baos = new java.io.ByteArrayOutputStream();
				b64os = new Base64.OutputStream(baos, ENCODE | dontBreakLines);
				gzos = new java.util.zip.GZIPOutputStream(b64os);

				gzos.write(source, off, len);
				gzos.close();
			} // end try
			catch (final java.io.IOException e) {
				e.printStackTrace();
				return null;
			} // end catch
			finally {
				StreamUtil.close(gzos, b64os, baos);
			} // end finally

			// Return value according to relevant encoding.
			try {
				return new String(baos.toByteArray(), PREFERRED_ENCODING);
			} // end try
			catch (final java.io.UnsupportedEncodingException uue) {
				return new String(baos.toByteArray());
			} // end catch
		} // end if: compress

		// Else, don't compress. Better not to use streams at all then.
		else {
			// Convert option to boolean in way that code likes it.
			final boolean breakLines = dontBreakLines == 0;

			final int len43 = len * 4 / 3;
			final byte[] outBuff = new byte[len43 // Main 4:3
					+ (len % 3 > 0 ? 4 : 0) // Account for padding
					+ (breakLines ? len43 / MAX_LINE_LENGTH : 0)]; // New
			// lines
			int d = 0;
			int e = 0;
			final int len2 = len - 2;
			int lineLength = 0;
			for (; d < len2; d += 3, e += 4) {
				encode3to4(source, d + off, 3, outBuff, e);

				lineLength += 4;
				if (breakLines && lineLength == MAX_LINE_LENGTH) {
					outBuff[e + 4] = NEW_LINE;
					e++;
					lineLength = 0;
				} // end if: end of line
			} // en dfor: each piece of array

			if (d < len) {
				encode3to4(source, d + off, len - d, outBuff, e);
				e += 4;
			} // end if: some padding needed

			// Return value according to relevant encoding.
			try {
				return new String(outBuff, 0, e, PREFERRED_ENCODING);
			} // end try
			catch (final java.io.UnsupportedEncodingException uue) {
				return new String(outBuff, 0, e);
			} // end catch

		} // end else: don't compress

	} // end encodeBytes

	public static String encodeObject(final java.io.Serializable serializableObject) {
		return encodeObject(serializableObject, NO_OPTIONS);
	} // end encodeObject

	/* ******** I N N E R C L A S S I N P U T S T R E A M ******** */

	public static String encodeObject(final java.io.Serializable serializableObject,
			final int options) {
		// Streams
		java.io.ByteArrayOutputStream baos = null;
		java.io.OutputStream b64os = null;
		java.io.ObjectOutputStream oos = null;
		java.util.zip.GZIPOutputStream gzos = null;

		// Isolate options
		final int gzip = options & GZIP;
		final int dontBreakLines = options & DONT_BREAK_LINES;

		try {
			// ObjectOutputStream -> (GZIP) -> Base64 -> ByteArrayOutputStream
			baos = new java.io.ByteArrayOutputStream();
			b64os = new Base64.OutputStream(baos, ENCODE | dontBreakLines);

			// GZip?
			if (gzip == GZIP) {
				gzos = new java.util.zip.GZIPOutputStream(b64os);
				oos = new java.io.ObjectOutputStream(gzos);
			} // end if: gzip
			else {
				oos = new java.io.ObjectOutputStream(b64os);
			}

			oos.writeObject(serializableObject);
		} // end try
		catch (final java.io.IOException e) {
			e.printStackTrace();
			return null;
		} // end catch
		finally {
			StreamUtil.close(oos, gzos, b64os, baos);
		} // end finally

		// Return value according to relevant encoding.
		try {
			return new String(baos.toByteArray(), PREFERRED_ENCODING);
		} // end try
		catch (final java.io.UnsupportedEncodingException uue) {
			return new String(baos.toByteArray());
		} // end catch

	} // end encode

	/* ******** I N N E R C L A S S O U T P U T S T R E A M ******** */

	private Base64() {
	}

} // end class Base64
